reset function.

standard spacing for cell molecule
MFTextField to view contstraining view
constraining protocol

MVMCoreUI.xcodeproj/project.pbxproj

@@ -38,6 +38,7 @@
 		D296E13C229598BF0051EBE7 /* MoleculeListCellProtocol.h in Headers */ = {isa = PBXBuildFile; fileRef = D296E13B2295969C0051EBE7 /* MoleculeListCellProtocol.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		D296E1412295EBBA0051EBE7 /* MoleculeDelegateProtocol.h in Headers */ = {isa = PBXBuildFile; fileRef = D296E1402295EBBA0051EBE7 /* MoleculeDelegateProtocol.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		D296E143229729C30051EBE7 /* MoleculeMappingObject+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = D296E142229729C30051EBE7 /* MoleculeMappingObject+Extension.swift */; };
+		D296E14722A5984C0051EBE7 /* MVMCoreUIViewConstrainingProtocol.h in Headers */ = {isa = PBXBuildFile; fileRef = D296E14622A597490051EBE7 /* MVMCoreUIViewConstrainingProtocol.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		D29770C821F7C4AE00B2F0D0 /* TopLabelsView.m in Sources */ = {isa = PBXBuildFile; fileRef = D29770C621F7C4AE00B2F0D0 /* TopLabelsView.m */; };
 		D29770C921F7C4AE00B2F0D0 /* TopLabelsView.h in Headers */ = {isa = PBXBuildFile; fileRef = D29770C721F7C4AE00B2F0D0 /* TopLabelsView.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		D29770F221F7C6D600B2F0D0 /* TopLabelsAndBottomButtonsTableViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = D29770EE21F7C6D600B2F0D0 /* TopLabelsAndBottomButtonsTableViewController.m */; };
@@ -202,6 +203,7 @@
 		D296E13B2295969C0051EBE7 /* MoleculeListCellProtocol.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MoleculeListCellProtocol.h; sourceTree = "<group>"; };
 		D296E1402295EBBA0051EBE7 /* MoleculeDelegateProtocol.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MoleculeDelegateProtocol.h; sourceTree = "<group>"; };
 		D296E142229729C30051EBE7 /* MoleculeMappingObject+Extension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "MoleculeMappingObject+Extension.swift"; sourceTree = "<group>"; };
+		D296E14622A597490051EBE7 /* MVMCoreUIViewConstrainingProtocol.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MVMCoreUIViewConstrainingProtocol.h; sourceTree = "<group>"; };
 		D29770C621F7C4AE00B2F0D0 /* TopLabelsView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = TopLabelsView.m; sourceTree = "<group>"; };
 		D29770C721F7C4AE00B2F0D0 /* TopLabelsView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TopLabelsView.h; sourceTree = "<group>"; };
 		D29770EE21F7C6D600B2F0D0 /* TopLabelsAndBottomButtonsTableViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = TopLabelsAndBottomButtonsTableViewController.m; sourceTree = "<group>"; };
@@ -664,6 +666,7 @@
 				D29DF27421E79E81003B2FB9 /* MVMCoreUILoggingHandler.m */,
 				D2C5001621F8ECDD001DA659 /* MVMCoreUIViewControllerMappingObject.h */,
 				D2C5001721F8ECDD001DA659 /* MVMCoreUIViewControllerMappingObject.m */,
+				D296E14622A597490051EBE7 /* MVMCoreUIViewConstrainingProtocol.h */,
 				D296E1402295EBBA0051EBE7 /* MoleculeDelegateProtocol.h */,
 				D2A514562211C53C00345BFB /* MVMCoreUIMoleculeMappingObject.h */,
 				D2A514572211C53C00345BFB /* MVMCoreUIMoleculeMappingObject.m */,
@@ -768,6 +771,7 @@
 				D29DF2B321E7B76D003B2FB9 /* MFLoadingSpinner.h in Headers */,
 				D29DF32521ED0DA2003B2FB9 /* TextButtonView.h in Headers */,
 				D29DF25021E6A177003B2FB9 /* MFDigitTextBox.h in Headers */,
+				D296E14722A5984C0051EBE7 /* MVMCoreUIViewConstrainingProtocol.h in Headers */,
 				D29DF2C621E7BF57003B2FB9 /* MFTabBarInteractor.h in Headers */,
 				D29DF25721E6A177003B2FB9 /* MFTextField.h in Headers */,
 				D29DF17521E69E1F003B2FB9 /* ButtonDelegateProtocol.h in Headers */,

MVMCoreUI/Atoms/Buttons/CaretButton.swift

@@ -8,7 +8,7 @@
 //
 
 
-open class CaretButton: MFCustomButton, MVMCoreUIMoleculeViewProtocol {
+open class CaretButton: MFCustomButton, MVMCoreUIMoleculeViewProtocol, MVMCoreUIViewConstrainingProtocol {
     
     //------------------------------------------------------
     // MARK: - Constants
@@ -136,7 +136,7 @@ open class CaretButton: MFCustomButton, MVMCoreUIMoleculeViewProtocol {
         return true
     }
     
-    open func moleculeAlignment() -> UIStackView.Alignment {
+    open func alignment() -> UIStackView.Alignment {
         return UIStackView.Alignment.leading;
     }
 }

MVMCoreUI/Atoms/Buttons/MFTextButton.h

@@ -10,7 +10,7 @@
 #import <MVMCoreUI/MFView.h>
 @class MFSizeObject;
 
-@interface MFTextButton : MFCustomButton <MVMCoreViewProtocol, MVMCoreUIMoleculeViewProtocol>
+@interface MFTextButton : MFCustomButton <MVMCoreViewProtocol, MVMCoreUIMoleculeViewProtocol, MVMCoreUIViewConstrainingProtocol>
 
 @property (nonnull, strong, nonatomic) MFSizeObject *sizeObject;
 

MVMCoreUI/Atoms/Buttons/MFTextButton.m

@@ -12,6 +12,7 @@
 #import "UIColor+MFConvenience.h"
 #import "MVMCoreUISplitViewController.h"
 #import "MVMCoreUIConstants.h"
+#import <MVMCoreUI/MVMCoreUI-Swift.h>
 @import MVMCore.MVMCoreDispatchUtility;
 @import MVMCore.MVMCoreGetterUtility;
 @import MVMCore.NSDictionary_MFConvenience;
@@ -128,6 +129,10 @@
 
 #pragma mark - MVMCoreUIMoleculeViewProtocol
 
+- (void)reset {
+    [self setTitleColor:[UIColor mfTextButtonColor] forState:UIControlStateNormal];
+}
+
 - (void)setWithJSON:(NSDictionary *)json delegateObject:(MVMCoreUIDelegateObject *)delegateObject additionalData:(NSDictionary *)additionalData {
     NSString *color = [json string:KeyTextColor];
     if (color) {
@@ -141,11 +146,13 @@
     }
 }
 
+#pragma mark - MVMCoreUIViewConstrainingProtocol
+
 - (BOOL)needsToBeConstrained {
     return YES;
 }
 
-- (UIStackViewAlignment)moleculeAlignment {
+- (UIStackViewAlignment)alignment {
     return UIStackViewAlignmentLeading;
 }
 

MVMCoreUI/Atoms/Buttons/PrimaryButton.h

@@ -26,7 +26,7 @@ typedef enum : NSUInteger {
 static CGFloat const PrimaryButtonHeight = 42.0;
 static CGFloat const PrimaryButtonSmallHeight = 30.0;
 
-@interface PrimaryButton : MFCustomButton <MFTextFieldDelegate, UITextFieldDelegate, MVMCoreViewProtocol, MVMCoreUIMoleculeViewProtocol>
+@interface PrimaryButton : MFCustomButton <MFTextFieldDelegate, UITextFieldDelegate, MVMCoreViewProtocol, MVMCoreUIMoleculeViewProtocol, MVMCoreUIViewConstrainingProtocol>
 
 @property (nonatomic, readonly, assign) PrimaryButtonType primaryButtonType; //use reset function to set
 

MVMCoreUI/Atoms/Buttons/PrimaryButton.m

@@ -638,6 +638,10 @@
 
 #pragma mark - Molecule protocol
 
+- (void)reset {
+    [self setAsStandardCustom];
+}
+
 - (void)setAsStandardCustom {
     // Default to standard look.
     self.primaryButtonType = PrimaryButtonTypeCustom;

MVMCoreUI/Atoms/TextFields/MFTextField.h

@@ -7,7 +7,7 @@
 //
 
 #import <UIKit/UIKit.h>
-#import <MVMCoreUI/MFView.h>
+#import <MVMCoreUI/ViewConstrainingView.h>
 
 @class PrimaryButton;
 @class MFTextField;
@@ -28,7 +28,7 @@
 
 @end
 
-@interface MFTextField : MFView <MVMCoreUIMoleculeViewProtocol>
+@interface MFTextField : ViewConstrainingView <MVMCoreUIMoleculeViewProtocol>
 
 @property (nullable, weak, nonatomic) UIView *view;
 

MVMCoreUI/Atoms/TextFields/MFTextField.m

@@ -40,17 +40,12 @@
 #pragma mark - setup
 
 - (void)updateView:(CGFloat)size {
+    [super updateView:size];
     [MVMCoreDispatchUtility performBlockOnMainThread:^{
         self.formLabel.font = [MFStyler fontB3];
         self.label.font = [MFStyler fontForTextFieldUnderLabel];
         [MFStyler styleTextField:self.textField];
         [self.dashLine updateView:size];
-        
-        if (self.isMolecule) {
-            [self setHorizontalPadding:[MFStyler defaultHorizontalPaddingForSize:size]];
-        } else {
-            [self setHorizontalPadding:0];
-        }
     }];
 }
 
@@ -369,14 +364,16 @@
     }];
 }
 
-- (void)setHorizontalPadding:(CGFloat)padding {
-    self.textContainerLeftPin.constant = padding;
-    self.errorLableLeftPin.constant = padding;
-    self.formLabelLeftPin.constant = padding;
-    
-    self.textContainerRightPin.constant = padding;
-    self.errorLableRightPin.constant = padding;
-    self.formLabelRightPin.constant = padding;
+- (void)setLeftPinConstant:(CGFloat)constant {
+    self.textContainerLeftPin.constant = constant;
+    self.errorLableLeftPin.constant = constant;
+    self.formLabelLeftPin.constant = constant;
+}
+
+- (void)setRightPinConstant:(CGFloat)constant {
+    self.textContainerRightPin.constant = constant;
+    self.errorLableRightPin.constant = constant;
+    self.formLabelRightPin.constant = constant;
 }
 
 - (void)dealloc {

MVMCoreUI/Atoms/Views/CaretView.swift

@@ -133,7 +133,7 @@ open class CaretView: MFView {
         return true
     }
     
-    open override func moleculeAlignment() -> UIStackView.Alignment {
+    open override func alignment() -> UIStackView.Alignment {
         return UIStackView.Alignment.leading;
     }
 }

MVMCoreUI/Atoms/Views/Label.swift

@@ -10,7 +10,7 @@
 import MVMCore
 
 
-@objc open class Label: UILabel, MVMCoreViewProtocol, MVMCoreUIMoleculeViewProtocol {
+@objc open class Label: UILabel, MVMCoreViewProtocol, MVMCoreUIMoleculeViewProtocol, MVMCoreUIViewConstrainingProtocol {
     //------------------------------------------------------
     // MARK: - Properties
     //------------------------------------------------------
@@ -295,14 +295,29 @@ import MVMCore
     // MARK: - Atomization
     //------------------------------------------------------
     
+    public func reset() {
+        text = nil
+        attributedText = nil
+        originalAttributedString = nil
+        styleB2(true)
+    }
+    
     @objc public func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: MVMCoreUIDelegateObject?, additionalData: [AnyHashable: Any]?) {
         Label.setUILabel(self, withJSON: json, delegate: delegateObject, additionalData: additionalData)
         originalAttributedString = attributedText
     }
     
+    public func setAsMolecule() {
+        setContentHuggingPriority(.required, for: .vertical)
+    }
+    
     public func needsToBeConstrained() -> Bool {
         return true;
     }
+    
+    public func alignment() -> UIStackView.Alignment {
+        return .leading
+    }
 }
 
 extension Label {

MVMCoreUI/Atoms/Views/MFView.h

@@ -8,9 +8,10 @@
 
 #import <UIKit/UIKit.h>
 #import <MVMCoreUI/MVMCoreUIMoleculeViewProtocol.h>
+#import <MVMCoreUI/MVMCoreUIViewConstrainingProtocol.h>
 @import MVMCore.MVMCoreViewProtocol;
 
-@interface MFView : UIView <MVMCoreViewProtocol, MVMCoreUIMoleculeViewProtocol>
+@interface MFView : UIView <MVMCoreViewProtocol, MVMCoreUIMoleculeViewProtocol, MVMCoreUIViewConstrainingProtocol>
 
 @property (nullable, nonatomic, strong) NSDictionary *json;
 

MVMCoreUI/Atoms/Views/MVMCoreUICheckBox.m

@@ -54,7 +54,7 @@ static const CGFloat CheckBoxHeightWidth = 18.0;
     return YES;
 }
 
-- (UIStackViewAlignment)moleculeAlignment {
+- (UIStackViewAlignment)alignment {
     return UIStackViewAlignmentLeading;
 }
 

MVMCoreUI/Atoms/Views/SeparatorView.m

@@ -70,6 +70,10 @@
 
 #pragma mark - set up
 
+- (void)reset {
+    [self setAsLight];
+}
+
 - (void)updateView:(CGFloat)size {
     [super updateView:size];
     self.height.constant = [self.heightSizeObject getValueBasedOnSize:size];

MVMCoreUI/Atoms/Views/ViewConstrainingView.m

@@ -145,6 +145,12 @@
     }
 }
 
+- (void)reset {
+    if ([self.constrainedView respondsToSelector:@selector(reset)]) {
+        [self.constrainedView performSelector:@selector(reset)];
+    }
+}
+
 #pragma mark - MVMCoreUIMoleculeViewProtocol
 
 - (void)setAsMolecule {

MVMCoreUI/MVMCoreUI.h

@@ -20,6 +20,7 @@ FOUNDATION_EXPORT const unsigned char MVMCoreUIVersionString[];
 #import <MVMCoreUI/MVMCoreUISession.h>
 #import <MVMCoreUI/MVMCoreUILoggingHandler.h>
 #import <MVMCoreUI/MVMCoreUIViewControllerMappingObject.h>
+#import <MVMCoreUI/MVMCoreUIViewConstrainingProtocol.h>
 #import <MVMCoreUI/MoleculeDelegateProtocol.h>
 #import <MVMCoreUI/MoleculeListCellProtocol.h>
 #import <MVMCoreUI/MVMCoreUIMoleculeMappingObject.h>

MVMCoreUI/Molecules/ButtonView.swift

@@ -39,6 +39,10 @@ import UIKit
     }
     
     // MARK: - MVMCoreViewProtocol
+    open override func reset() {
+        primaryButton?.reset()
+    }
+    
     open override func updateView(_ size: CGFloat) {
         super.updateView(size)
         MVMCoreDispatchUtility.performBlock(onMainThread: {

MVMCoreUI/Molecules/MVMCoreUIMoleculeViewProtocol.h

@@ -12,21 +12,19 @@
 
 @protocol MVMCoreUIMoleculeViewProtocol <NSObject, MVMCoreViewProtocol>
 
-// Sets up the ui based on the json
+/// Sets up the ui based on the json
 - (void)setWithJSON:(nullable NSDictionary *)json delegateObject:(nullable MVMCoreUIDelegateObject *)delegateObject additionalData:(nullable NSDictionary *)additionalData;
 
 @optional
 
-// Called after init to provide an early setter for any molecule specific logic
+/// Called after init to provide an early setter for any molecule specific logic
 - (void)setAsMolecule;
 
-// Notifies the creator that the view needs to be constrained in a view.
-- (BOOL)needsToBeConstrained;
+/// Resets to default state before set with json is called again.
+- (void)reset;
 
-// The alignment for the molecule if constrained.
-- (UIStackViewAlignment)moleculeAlignment;
 
-// For the molecule list to load more efficiently.
+/// For the molecule list to load more efficiently.
 + (CGFloat)estimatedHeightForRow:(nullable NSDictionary *)json;
 
 @end

MVMCoreUI/Molecules/MoleculeTableViewCell.swift

@@ -41,7 +41,7 @@ import UIKit
     
     // MARK: - MFViewProtocol
     public func updateView(_ size: CGFloat) {
-        MFStyler.setDefaultMarginsFor(self, size: size)
+        MFStyler.setDefaultMarginsFor(self, size: size, horizontal: true, vertical: true)
         if #available(iOS 11.0, *) {
             contentView.directionalLayoutMargins = directionalLayoutMargins
             topSeparatorView?.setLeftAndRightPinConstant(directionalLayoutMargins.leading)
@@ -75,7 +75,16 @@ import UIKit
         if molecule == nil {
             if let moleculeView = MVMCoreUIMoleculeMappingObject.shared()?.createMolecule(forJSON: moleculeJSON, delegateObject: delegateObject, constrainIfNeeded: true) {
                 contentView.addSubview(moleculeView)
-                NSLayoutConstraint.activate(Array(NSLayoutConstraint.pinView(toSuperview: moleculeView, useMargins: moleculeView.needsToBeConstrained?() ?? false).values))
+                let standardConstraints = (moleculeView as? MVMCoreUIViewConstrainingProtocol)?.useStandardConstraints?() ?? true
+                NSLayoutConstraint.activate(Array(NSLayoutConstraint.pinView(toSuperview: moleculeView, useMargins: standardConstraints).values))
+                if standardConstraints {
+                    let constraint = contentView.heightAnchor.constraint(equalToConstant: 80)
+                    constraint.priority = .defaultLow
+                    constraint.isActive = true
+                    if let moleculeView = moleculeView as? ViewConstrainingView {
+                        moleculeView.updateViewHorizontalDefaults = false
+                    }
+                }
                 molecule = moleculeView
             }
         } else {
@@ -97,6 +106,10 @@ import UIKit
         }
     }
     
+    public func reset() {
+        molecule?.reset?()
+    }
+    
     public static func estimatedHeight(forRow json: [AnyHashable : Any]?) -> CGFloat {
         guard let moleculeJSON = json?.optionalDictionaryForKey(KeyMolecule),
             let theClass = MVMCoreUIMoleculeMappingObject.shared()?.getMoleculeClass(withJSON: moleculeJSON, delegateObject: nil),

MVMCoreUI/Molecules/StandardFooterView.swift

@@ -101,4 +101,9 @@ public class StandardFooterView: ViewConstrainingView {
         twoButtonView.setWithJSON(json?.optionalDictionaryForKey("twoButtonView"), delegateObject: delegateObject, additionalData: additionalData)
         textButton.setWithJSON(json?.optionalDictionaryForKey("textButton"), delegateObject: delegateObject, additionalData: additionalData)
     }
+    
+    public override func reset() {
+        twoButtonView.reset()
+        textButton.reset()
+    }
 }

MVMCoreUI/Molecules/StandardHeaderView.swift

@@ -19,6 +19,7 @@ public class StandardHeaderView: ViewConstrainingView {
     var rightConstraintMessage: NSLayoutConstraint?
     private var heightConstraint: NSLayoutConstraint?
     
+    // MARK: - MVMCoreViewProtocol
     public override func updateView(_ size: CGFloat) {
         super.updateView(size)
         headlineLabel.updateView(size)
@@ -74,6 +75,7 @@ public class StandardHeaderView: ViewConstrainingView {
         }
     }
     
+    // MARK: - Constraining
     public func setSpacing() {
         if headlineLabel.hasText && messageLabel.hasText {
             spaceBetweenLabels?.constant = PaddingTwo
@@ -110,6 +112,15 @@ public class StandardHeaderView: ViewConstrainingView {
         separatorView?.rightPin?.constant = constant
     }
     
+    open override func reset() {
+        backgroundColor = .clear
+        headlineLabel.styleH2(true)
+        messageLabel.styleB2(true)
+        separatorView?.setAsHeavy()
+        separatorView?.show()
+    }
+    
+    // MARK: - MVMCoreUIMoleculeViewProtocol
     open override func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: MVMCoreUIDelegateObject?, additionalData: [AnyHashable: Any]?) {
         super.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
         if let colorString = json?.optionalStringForKey(KeyBackgroundColor) {

MVMCoreUI/Molecules/Switch.swift

@@ -80,7 +80,7 @@ import UIKit
         return true
     }
     
-    public override func moleculeAlignment() -> UIStackView.Alignment {
+    public override func alignment() -> UIStackView.Alignment {
         return UIStackView.Alignment.leading
     }
 }

MVMCoreUI/Molecules/SwitchLineItem.swift

@@ -113,7 +113,7 @@ import UIKit
         return true
     }
     
-    public override func moleculeAlignment() -> UIStackView.Alignment {
+    public override func alignment() -> UIStackView.Alignment {
         return UIStackView.Alignment.leading
     }
 }

MVMCoreUI/Molecules/TwoButtonView.swift

@@ -49,6 +49,11 @@ import UIKit
         set(primaryButtonJSON: primaryButtonMap, secondaryButtonJSON: secondaryButtonMap, delegateObject: delegateObject, additionalData: additionalData)
     }
     
+    open override func reset() {
+        super.reset()
+        secondaryButton?.setAsSecondaryCustom()
+    }
+    
     // MARK: - Constraining
     override func setupButton() {
         setupWithTwoButtons()

MVMCoreUI/OtherHandlers/MVMCoreUIMoleculeMappingObject.m

@@ -13,6 +13,7 @@
 #import "MVMCoreUIObject.h"
 #import <MVMCoreUI/MVMCoreUI-Swift.h>
 #import "MFTextField.h"
+#import "MVMCoreUIViewConstrainingProtocol.h"
 
 @implementation MVMCoreUIMoleculeMappingObject
 
@@ -82,8 +83,11 @@
         return nil;
     }
     UIView <MVMCoreUIMoleculeViewProtocol>*molecule = [self createMoleculeForName:moleculeName];
-    if (constrainIfNeeded && [molecule respondsToSelector:@selector(needsToBeConstrained)] && [molecule needsToBeConstrained]) {
-        molecule = [[ViewConstrainingView alloc] initWithMolecule:molecule alignment:[molecule respondsToSelector:@selector(moleculeAlignment)] ? [molecule moleculeAlignment] : UIStackViewAlignmentFill];
+    
+    // Check if we need to constrain this view.
+    UIView <MVMCoreUIViewConstrainingProtocol> *castMolecule = [molecule conformsToProtocol:@protocol(MVMCoreUIViewConstrainingProtocol)] ? (UIView <MVMCoreUIViewConstrainingProtocol> *)molecule : nil;
+    if (constrainIfNeeded && [castMolecule respondsToSelector:@selector(needsToBeConstrained)] && [castMolecule needsToBeConstrained]) {
+        molecule = [[ViewConstrainingView alloc] initWithMolecule:molecule alignment:[castMolecule respondsToSelector:@selector(alignment)] ? [castMolecule alignment] : UIStackViewAlignmentFill];
     }
     [molecule setWithJSON:moleculeJSON delegateObject:delegateObject additionalData:nil];
     return molecule;

MVMCoreUI/OtherHandlers/MVMCoreUIViewConstrainingProtocol.h

@@ -0,0 +1,24 @@
+//
+//  MVMCoreUIViewConstrainingProtocol.h
+//  MVMCoreUI
+//
+//  Created by Scott Pfeil on 6/3/19.
+//  Copyright © 2019 Verizon Wireless. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@protocol MVMCoreUIViewConstrainingProtocol <NSObject>
+
+@optional
+
+/// Notifies the creator that the view may not be suitable to be shown on its own and it needs to be added to a view to help with layout.
+- (BOOL)needsToBeConstrained;
+
+/// The alignment if constrained.
+- (UIStackViewAlignment)alignment;
+
+/// Can be used to override any standard constraints that may be added.
+- (BOOL)useStandardConstraints;
+
+@end

MVMCoreUI/Styles/MFStyler.h

@@ -91,6 +91,7 @@ B3 -> Legal
 + (CGFloat)defaultHorizontalPaddingForSize:(CGFloat)size;
 + (CGFloat)defaultVerticalPaddingForSize:(CGFloat)size;
 + (void)setDefaultMarginsForView:(nullable UIView *)view size:(CGFloat)size;
++ (void)setDefaultMarginsForView:(nullable UIView *)view size:(CGFloat)size horizontal:(BOOL)horizontal vertical:(BOOL)vertical;
 
 //-------------------------------------------------
 // Returns the fonts for these styles. Scales them as needed by default

MVMCoreUI/Styles/MFStyler.m

@@ -91,12 +91,17 @@ CGFloat const LabelWithInternalButtonLineSpace = 2;
 }
 
 + (void)setDefaultMarginsForView:(nullable UIView *)view size:(CGFloat)size {
+    [self setDefaultMarginsForView:view size:size horizontal:YES vertical:NO];
+}
+
++ (void)setDefaultMarginsForView:(nullable UIView *)view size:(CGFloat)size horizontal:(BOOL)horizontal vertical:(BOOL)vertical {
     [MVMCoreDispatchUtility performBlockOnMainThread:^{
-        CGFloat padding = [MFStyler defaultHorizontalPaddingForSize:size];
+        CGFloat horizontalPadding = horizontal ? [MFStyler defaultHorizontalPaddingForSize:size] : 0;
+        CGFloat verticalPadding = vertical ? PaddingDefaultVerticalSpacing : 0;
         if (@available(iOS 11.0, *)) {
-            view.directionalLayoutMargins = NSDirectionalEdgeInsetsMake(0, padding, 0, padding);
+            view.directionalLayoutMargins = NSDirectionalEdgeInsetsMake(verticalPadding, horizontalPadding, verticalPadding, horizontalPadding);
         } else {
-            view.layoutMargins = UIEdgeInsetsMake(0, padding, 0, padding);
+            view.layoutMargins = UIEdgeInsetsMake(verticalPadding, horizontalPadding, verticalPadding, horizontalPadding);
         }
     }];
 }

MVMCoreUI/Templates/MoleculeListTemplate.swift

@@ -85,6 +85,7 @@ open class MoleculeListTemplate: ThreeLayerTableViewController {
             protocolCell.setSeparatorWithJSON?(loadObject?.pageJSON?.optionalDictionaryForKey("separator"), delegateObject: delegate, additionalData: nil, indexPath: indexPath)
         }
         if let protocolCell = cell as? MVMCoreUIMoleculeViewProtocol {
+            protocolCell.reset?()
             protocolCell.setWithJSON(molecule.molecule, delegateObject: delegate, additionalData: nil)
             protocolCell.updateView(tableView.bounds.width)
         }